London’s FTSE 100 declined on Tuesday, ending a four-session winning streak as disappointing corporate earnings, weakness in global technology stocks and uncertainty ahead of the US midterm elections weighed on investor sentiment.
The benchmark index fell 0.4%, retreating from near three-month highs reached following a positive market response to Chancellor John Healey’s first Budget and resilient third-quarter company results.
Shares in Associated British Foods (LSE:ABF) came under pressure after the Primark owner reported a decline in annual profitability, adding to losses across retail and consumer staples stocks.
Investors were also assessing concerns about rising artificial intelligence infrastructure costs and preparing for the Bank of England’s interest rate decision on Thursday, 5 November.
Associated British Foods Leads Retail Sector Declines
Associated British Foods shares fell approximately 3% after the diversified retail and food group reported weaker annual earnings.
The company recorded adjusted operating profit of £1.508 billion for the financial year ended 12 September 2026, representing a 14% decline from the previous year.
The deterioration reflected pressure on profitability at its Primark clothing business, where challenging consumer spending conditions affected performance.
Lower European sugar prices also contributed to weaker results across the group’s sugar operations.
The earnings announcement added to concerns about consumer-facing businesses and their ability to maintain profitability amid subdued spending and changing market conditions.
Weakness in Associated British Foods contributed to broader declines across the FTSE 100’s retail and consumer staples sectors.
Global Technology Sell-Off Adds to Market Pressure
London equities also faced pressure from a wider international sell-off in technology shares, as investors reassessed earnings prospects and the cost of expanding artificial intelligence infrastructure.
Concerns intensified following a warning from Apple that rising memory chip costs could affect gross margins during the important holiday shopping quarter.
The warning highlighted potential cost pressures facing consumer electronics manufacturers and other businesses dependent on semiconductor components.
Investors also reacted to Oracle’s (NYSE:ORCL) announcement that it plans to raise $20 billion through debt and equity financing to support its cloud computing and artificial intelligence infrastructure investments.
The proposed fundraising drew attention to the substantial capital requirements associated with expanding AI data centres and related computing capacity.
The combination of higher component costs and increased infrastructure spending prompted renewed scrutiny of technology company profitability and cash flow.
The resulting shift in sentiment affected growth-oriented equities across international markets, contributing to the weaker trading environment in London.
Investors Reassess AI Infrastructure Spending
The latest developments at Apple and Oracle added to an ongoing debate over the financial implications of rapid investment in artificial intelligence.
Technology companies have committed substantial resources to developing data centres, expanding cloud capacity and securing the computing equipment required to support AI applications.
While these investments are intended to support future growth, investors are increasingly focused on the timing of potential returns and the effect of higher expenditure on near-term profitability.
Oracle’s proposed $20 billion financing highlighted the scale of funding required for large infrastructure programmes.
At the same time, Apple’s warning about memory chip costs suggested that demand for computing components could create additional pressures elsewhere in the technology supply chain.
The broader sell-off encouraged a more defensive approach among investors, with increased interest in European government bonds as market participants reduced exposure to riskier assets.
US Midterm Elections Create Additional Uncertainty
Political developments in the United States were another focus for global financial markets as voters headed to the polls on Tuesday.
The midterm elections will determine control of all 435 seats in the House of Representatives and 35 Senate seats, potentially reshaping the balance of power in Washington.
Polling ahead of the vote indicated that Democrats could regain control of the House, creating the possibility of divided government during the remainder of President Donald Trump’s second term.
Such an outcome could complicate the passage of legislation and influence negotiations over federal spending, borrowing and regulatory policy.
Investors are particularly attentive to the potential implications for fiscal policy, future debt-ceiling discussions and regulation affecting major technology companies.
The election results could also influence the policy environment surrounding artificial intelligence infrastructure and other areas of corporate investment.
However, the eventual impact on financial markets will depend on the composition of Congress and the policies pursued following the election.
Bank of England Rate Decision in Focus
UK investors are also looking ahead to the Bank of England’s monetary policy announcement on Thursday, 5 November.
The Monetary Policy Committee is scheduled to decide whether to adjust borrowing costs against a backdrop of domestic economic uncertainty and developments in global financial markets.
The decision will be closely watched for indications of the central bank’s assessment of inflation, economic growth and the appropriate direction of interest rates.
Any accompanying guidance could influence expectations for future monetary policy and affect sterling, government bond yields and interest-rate-sensitive equities.
The meeting follows the UK Budget, which had previously helped support investor confidence and contributed to the FTSE 100’s recent gains.
With the index having advanced for four consecutive sessions before Tuesday’s decline, investors are now reassessing valuations and positioning ahead of the monetary policy announcement.
Outlook
The FTSE 100’s 0.4% decline ended its longest winning streak since August, as weaker earnings from Associated British Foods combined with a global retreat from technology stocks.
Concerns about rising semiconductor costs and the financing requirements of AI infrastructure projects have added to uncertainty surrounding corporate profitability and investment returns.
Attention will now turn to the outcome of the US midterm elections and the Bank of England’s interest rate decision on Thursday.
These developments could influence market sentiment, currency movements and expectations for economic policy over the coming weeks.
For London equities, the near-term direction is likely to depend on corporate earnings, developments in international technology markets and the outlook for UK borrowing costs.
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